Raw water supplies i.e. river waters, dam waters, borehole waters, can be contaminated with high levels of suspended solids – typically. The increasing need to save money on the cost of water and to better use this valuable resource, water re-use and re-cycling on industrial sites is becoming more important. Filters minimise the build-up of suspended solids in cooling tower systems, under which harmful and troublesome bacteria grow, keeping systems clean and enhancing cooling efficiency.